Literatura obcojęzyczna
- L. David Mech, The Wolf: The Ecology and Behavior of an Endangered Species (1970).
- L. David Mech, The Way Of The Wolf.
- L. David Mech, The Arctic Wolf: Ten Years with the Pack.
- L. David Mech, Luigi Boitani, Wolves: Behavior, Ecology, and Conservation (2003).
- Barry Holstun Lopez, Of Wolves and Man.
- R. D. Lawrence, Trail of the Wolf.
- Patricia A. Goodmann, Erich Klinghammer, Wolf Ethogram. Ethology Series No.3, North American Wildlife Park Foundation, Battle Ground: 1 – 31. (1990).
- Erik Zimen, Der Wolf. Mythos und Verhalten. Meyster Verlag GmbH, Wien 1980.
- Bibikov DI, The wolf: History, systematics, morphology, ecology, 1985. Moscow.
- Bibikov DI, Wold behaviour, (A collection of scientific papers), 1980. Moscow.
- Nikolsky, AA, Frommolt, KH, Wolf`s acoustic activity, 1989. Moscow.